New Sapphire HD7750, whole system problems

So basicly im running with this old rig

CPU Type DualCore AMD Athlon II X2 250, 3000 MHz (15 x 200)

Motherboard Name Gigabyte GA-MA785GT-UD3H (2 PCI, 3 PCI-E x1, 2 PCI-E x16, 4 DDR3 DIMM, Audio, Video, Gigabit LAN, IEEE-1394)
Motherboard Chipset AMD 785G, AMD K10 System Memory 3328 MB (DDR3-1333 DDR3 SDRAM )
DIMM3: Corsair Value Select VS2GB1333D4 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (7-7-7-19 @ 518 MHz) (6-6-6-16 @ 444 MHz)
DIMM4: Kingmax FLFE85F-B8MH9 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz) BIOS Type Award Modular (09/16/09) Communication Port Communications Port (COM1) Communication Port Printer Port (LPT1)

Display: Video Adapter ATI Radeon HD 4800 Series (512 MB) 3D Accelerator ATI Radeon HD 4850 (RV770) Monitor BenQ G2420HDB (Analog) [24" LCD] (CA909850SL000)

Multimedia: Audio Adapter ATI Radeon HDMI @ ATI RV770/790 - High Definition Audio Controller Audio Adapter Realtek ALC885/889A/890 @ ATI SB750 - High Definition
Audio Controller Storage: IDE Controller Standard Dual Channel PCI IDE Controller Disk Drive WDC WD5000AADS-00S9B0 ATA Device (465 GB, IDE) SMART Hard Disks Status OK

Running an ALINE PSU with 500w. and all it says on the psu is : Voltage px 500, ac input 10A / 5A , dc input +3.3v (36A) +5v (40A) [Max 275] +12v(25A), -5v(0.5A), -12v(0.8A) +5svb(2A).

Anyway, last month I encountered some problems and had to replace the GPU with a SAPPHIRE HD7750 1gbDDR5

Until I replace the GPU I reinstalled OS and got an x64 OS and updated my bios to F8. I used the Integrated graphics card to do all the stuff until I figured out the bad video card was the problem.

After I got my new card I didn't reinstall windows but just updated drivers for my new card. With my new gpu im encountering very very minor screen tearing or flicker in world of warcraft. I thought Vsync was the problem, but activating it didn't change much. The flicker/tearing is very very small and can barely be seen but you'll notice it if you focus.

Also since the new gpu my computer is randomly freezing in wow and application hangs a lot.

My temperatures are pretty normal ( 40-50degrees GPU, 50-60 degrees CPU ) . I tried replacing the dvi cable but that didn't help at all, hell, I even replaced the gpu in the other pci slot.

I'm starting to pull my hair out, pc randomly freezes, the screen tearing/flicker (no idea which one is, just some horizontal lines) and random stuff that occurs from time to time. The old problem with the video card was that when I used it, it went blue screen and the video card wouldn't work.
I'm starting to think it's actually the motherboard or can the BIOS cause any problems? Will a fresh install of OS help me at all with the flicker/tearing and random freezes?

Sorry for the mess, I really don't have anymore patience -.
8 answers Last reply
More about sapphire hd7750 system problems
  2. I used driver wiper or what's called for that. I thought that should've worked :-/
  3. That doe s not always get everything. You need to make sure that all old drivers (GPU) for the old card are gone. If you have to reinstall your OS with all new drivers plus make sure your bios is up to date. But first I would go with the GPU drivers. Do everything one step at a time to eliminate them 1 by 1. Last resort would be to reinstall everything. Win 7 should have installed the drivers for you. Normally the problem is a conflict with old drivers.
  4. do conflicts still exist even if the old drivers were still amd? even the integrated gpu was amd
  5. tournique said:
    do conflicts still exist even if the old drivers were still amd? even the integrated gpu was amd

    Yes, uninstall everything except your integradated drivers.
  6. If you had issues with a GPU, replaced it with a new one and still have issues, I'd start looking at the PSU. How old is that thing? Doesn't look like a quality unit at any rate. If it's degraded over time and borderline good enough, fluctuations could cause seemingly random problems.

    Another thing to consider is your RAM. I'd run memtest86 overnight and see if it throws any errors. I'd do a reinstall as a last resort.

    Flickering might be a iffy monitor cable. See if you have a spare or can borrow one. Also try different ports on the monitor if has multiples.
  7. I tried a different cable and same problems... Again, I am not sure if there are flickers/tearing but you can see the image shaking at a very small scale. It's not something you can notice unless you stare for a few minutes, then in becomes obvious. Can I put memtest86 on a stick?
  8. Dunno - try the google. Is there a microwave or some other device with a large power draw, or something with a larger emitter near the cable or monitor (anything with a big magnet too)?
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